def test_report_import_error(self):
"""
get_package_versions_and_locations reports a dependency if a dependency
cannot be imported.
"""
# Make sure we don't leave the system in a bad state.
self.addCleanup(lambda foolscap=sys.modules["foolscap"]: setitem(
sys.modules,
"foolscap",
foolscap,
), )
# Make it look like Foolscap isn't installed.
sys.modules["foolscap"] = None
vers_and_locs, errors = get_package_versions_and_locations()
foolscap_stuffs = [
stuff for (pkg, stuff) in vers_and_locs if pkg == 'foolscap'
]
self.failUnlessEqual(len(foolscap_stuffs), 1)
self.failUnless(
[e for e in errors if "\'foolscap\' could not be imported" in e])
def test_packages_from_pkg_resources(self):
if hasattr(sys, 'frozen'):
raise unittest.SkipTest(
"This test doesn't apply to frozen builds.")
class MockPackage(object):
def __init__(self, project_name, version, location):
self.project_name = project_name
self.version = version
self.location = location
def call_pkg_resources_require(*args):
return [MockPackage("Foo", "1.0", "/path")]
self.patch(pkg_resources, 'require', call_pkg_resources_require)
(packages, errors) = get_package_versions_and_locations()
self.failUnlessIn(
("foo", ("1.0", "/path", "according to pkg_resources")), packages)
self.failIfEqual(errors, [])
self.failUnlessEqual(
[e for e in errors if "was not found by pkg_resources" not in e],
[])
